The arrival of Hurricane Sandy has prompted the Girl Scouts of Eastern Massachusetts to postpone its annual Leading Women Awards Celebration breakfast event, scheduled for Monday morning at the Sheraton Boston Hotel.

Five hundred people had bought tickets for the event, which was scheduled to start at 7 a.m. and will be rescheduled for another date in 2012, according to Jan Goldstein, a spokeswoman for the Girl Scouts.

With the hurricane bearing down on the East Coast, by Sunday evening it was clear that the organization would have to find a new date, Goldstein said. Many of the expected guests would be traveling from Cape Cod and other parts of the state, she said.

Girl Scouts staff immediately changed the messages on the organization’s website and voicemail system, sent an email blast to ticket holders, posted the change on Facebook and Twitter and made personal phone calls, among other steps.

And Monday morning, the Girl Scouts assigned a staff person to the hotel to greet any guests who might show up. None did, Goldstein said.

The Sheraton has agreed to change the date without penalizing the Girl Scouts, Goldstein said.